Viper THFON2 | T-Harness 2008-2016 Ford DS4/DS4+

Streamline your Ford and Lincoln remote start installations.

Product Overview

The Viper THFON2 T-Harness is a vehicle-specific wiring harness designed for installing Viper DS4 and DS4+ remote start systems in select Ford and Lincoln vehicles from 2008 to 2016. This precision-engineered harness eliminates wire cutting and splicing by providing direct plug-and-play connectivity between your vehicle's factory wiring and Viper's advanced remote start systems.

Built specifically for Ford Motor Company's electrical architecture during this model range, the THFON2 integrates seamlessly with both DS4 and DS4+ systems, taking advantage of their D2D 2.0 peripheral connections and high-current relay outputs. This dual compatibility makes it an essential component for professional installers working with Ford and Lincoln vehicles from this era.

Key Specifications

• Compatible with both Viper DS4 and DS4+ remote start systems
• Fits select Ford and Lincoln vehicles 2008-2016 model years
• Plug-and-play installation - no wire cutting required
• Vehicle-specific connectors for Ford/Lincoln electrical systems
• Supports D2D 2.0 peripheral connections
• Maintains all factory vehicle functions during installation
• Professional-grade automotive wiring and connectors

Features & Benefits

Dual System Compatibility - Works with both DS4 and DS4+ systems, providing flexibility for installers and customers choosing between remote start only or remote start with security features.

Ford/Lincoln Specific Design - Engineered for Ford Motor Company's electrical systems, ensuring perfect connector fit and optimal signal integration across Ford and Lincoln model ranges.

Reduced Installation Time - Pre-wired connections eliminate time-consuming wire identification and splicing, allowing installers to complete jobs faster with fewer potential errors.

D2D 2.0 Integration - Supports Viper's advanced D2D 2.0 peripheral connections, enabling cleaner module layouts and easier troubleshooting during and after installation.

Factory Function Preservation - Maintains all original Ford/Lincoln vehicle functions including steering wheel controls, warning systems, and diagnostic capabilities throughout the installation process.

Advantages & Limitations

Advantages:

• Dual compatibility with DS4 and DS4+ systems increases versatility
• Significantly reduces installation labour time and complexity
• Eliminates wire splicing errors that can damage factory harnesses
• Maintains vehicle warranty by preserving original wiring integrity
• Professional-grade connections ensure long-term reliability

Limitations:

• Limited to select Ford and Lincoln models 2008-2016 (not universal coverage)
• Requires verification of specific vehicle compatibility before installation
• Not compatible with Viper systems older than DS4

Technical Specs

• System compatibility: Viper DS4 and DS4+ remote start systems
• Vehicle coverage: Select Ford and Lincoln models 2008-2016
• Connection type: Vehicle-specific plug-and-play connectors
• Peripheral support: D2D 2.0 connections
• Installation method: T-harness (inline with factory wiring)
• Wire gauge: Not specified
• Harness length: Not specified
• Operating temperature range: Not specified

Frequently Asked Questions

What's the difference between DS4 and DS4+ compatibility? This harness works with both systems. DS4+ adds security features and 5 high-current relays, while DS4 is remote start only.

Which specific Ford and Lincoln models are supported? Compatibility varies by model and trim level. Verify your specific vehicle before ordering to ensure proper fitment.

Will this work with 2017+ Ford vehicles? No, Ford updated their electrical systems after 2016. Newer vehicles require different harnesses.

Can I install this myself? While plug-and-play, remote start installation requires automotive electrical knowledge. Professional installation recommended.

Compatible With / Goes Well With

• Viper DS4 remote start systems
• Viper DS4+ remote start and security systems
• Select Ford vehicles 2008-2016
• Select Lincoln vehicles 2008-2016
• Viper smartphone app integration modules
• Professional automotive installation tools

Note: Always verify your specific Ford or Lincoln model's compatibility before ordering, as coverage varies by vehicle configuration.